Freeze breadcrumb navigation and toolbar during file upload

Prevents accidental path changes mid-upload that would cause files
to upload to wrong directory.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: davindicode

app/components/files/FilesPage.tsx

@@ -332,10 +332,10 @@ function FileSessionView({ session }: { session: FileSession }) {
 
   return (
     <>
-      <Breadcrumbs path={cwd} onNavigate={handleNavigate} onGoUp={handleGoUp} canGoUp={cwd !== "/"} />
+      <Breadcrumbs path={cwd} onNavigate={uploading ? () => {} : handleNavigate} onGoUp={uploading ? () => {} : handleGoUp} canGoUp={cwd !== "/" && !uploading} />
 
       {/* Toolbar */}
-      <div className="flex items-center justify-between px-3 py-1.5 bg-[#16162a] border-b border-gray-700 shrink-0">
+      <div className={`flex items-center justify-between px-3 py-1.5 bg-[#16162a] border-b border-gray-700 shrink-0 ${uploading ? "pointer-events-none opacity-50" : ""}`}>
         <div className="flex items-center gap-0.5">
           <button onClick={() => loadDirectory(cwd)} className="p-1.5 text-gray-400 hover:text-white transition-colors" title="Refresh">
             <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24" strokeWidth={2}>